diff --git a/polkadot/.gitlab-ci.yml b/polkadot/.gitlab-ci.yml
index 5b33eb2c9a..5bbba30f4e 100644
--- a/polkadot/.gitlab-ci.yml
+++ b/polkadot/.gitlab-ci.yml
@@ -785,6 +785,33 @@ zombienet-tests-malus-dispute-valid:
   tags:
     - zombienet-polkadot-integration-test
 
+zombienet-tests-deregister-register-validator:
+  stage:                           stage3
+  image:                           "docker.io/paritytech/zombienet:v1.2.47"
+  <<:                              *kubernetes-env
+  <<:                              *zombienet-refs
+  needs:
+    - job:                         publish-polkadot-debug-image
+      artifacts:                   true
+  variables:
+    GH_DIR:                        "https://github.com/paritytech/polkadot/tree/${CI_COMMIT_SHORT_SHA}/zombienet_tests/smoke"
+  before_script:
+    - echo "Zombie-net Tests Config"
+    - echo "${ZOMBIENET_IMAGE_NAME}"
+    - echo "${PARACHAINS_IMAGE_NAME} ${PARACHAINS_IMAGE_TAG}"
+    - echo "${GH_DIR}"
+    - export DEBUG=zombie*
+    - export ZOMBIENET_INTEGRATION_TEST_IMAGE=${PARACHAINS_IMAGE_NAME}:${PARACHAINS_IMAGE_TAG}
+    - export MALUS_IMAGE=${MALUS_IMAGE_NAME}:${MALUS_IMAGE_TAG}
+  script:
+    - /home/nonroot/zombie-net/scripts/ci/run-test-env-manager.sh
+        --github-remote-dir="${GH_DIR}"
+        --test="0003-deregister-register-validator-smoke.feature"
+  allow_failure:                   false
+  retry: 2
+  tags:
+    - zombienet-polkadot-integration-test
+
 #### stage:                        stage4
 
 publish-rustdoc:
diff --git a/polkadot/zombienet_tests/smoke/0003-deregister-register-validator-smoke.feature b/polkadot/zombienet_tests/smoke/0003-deregister-register-validator-smoke.feature
new file mode 100644
index 0000000000..90fa4ef9d7
--- /dev/null
+++ b/polkadot/zombienet_tests/smoke/0003-deregister-register-validator-smoke.feature
@@ -0,0 +1,28 @@
+Description: Deregister / Register Validator Smoke
+Network: ./0003-deregister-register-validator-smoke.toml
+Creds: config
+
+alice: is up
+bob: is up
+charlie: is up
+dave: is up
+
+# ensure is in the validator set
+dave: reports polkadot_node_is_parachain_validator is 1 within 240 secs
+dave: reports polkadot_node_is_active_validator is 1 within 240 secs
+
+# deregister and check
+alice: js-script ./0003-deregister-register-validator.js with "deregister,dave" return is 0 within 30 secs
+
+# Wait 2 sessions. The authority set change is enacted at curent_session + 2.
+sleep 120 seconds
+dave: reports polkadot_node_is_parachain_validator is 0 within 180 secs
+dave: reports polkadot_node_is_active_validator is 0 within 180 secs
+
+# register and check
+alice: js-script ./0003-deregister-register-validator.js with "register,dave" return is 0 within 30 secs
+
+# Wait 2 sessions. The authority set change is enacted at curent_session + 2.
+sleep 120 seconds
+dave: reports polkadot_node_is_parachain_validator is 1 within 180 secs
+dave: reports polkadot_node_is_active_validator is 1 within 180 secs
diff --git a/polkadot/zombienet_tests/smoke/0003-deregister-register-validator-smoke.toml b/polkadot/zombienet_tests/smoke/0003-deregister-register-validator-smoke.toml
new file mode 100644
index 0000000000..bc1dbe6d3e
--- /dev/null
+++ b/polkadot/zombienet_tests/smoke/0003-deregister-register-validator-smoke.toml
@@ -0,0 +1,24 @@
+[settings]
+timeout = 1000
+
+[relaychain]
+default_image = "{{ZOMBIENET_INTEGRATION_TEST_IMAGE}}"
+chain = "rococo-local"
+command = "polkadot"
+
+  [[relaychain.nodes]]
+  name = "alice"
+  args = ["-lruntime=debug,parachain=trace" ]
+
+  [[relaychain.nodes]]
+  name = "bob"
+  args = [ "-lruntime=debug,parachain=trace" ]
+
+  [[relaychain.nodes]]
+  name = "charlie"
+  args = [ "-lruntime=debug,parachain=trace" ]
+
+  [[relaychain.nodes]]
+  name = "dave"
+  args = [ "-lruntime=debug,parachain=trace" ]
+  
\ No newline at end of file
diff --git a/polkadot/zombienet_tests/smoke/0003-deregister-register-validator.js b/polkadot/zombienet_tests/smoke/0003-deregister-register-validator.js
new file mode 100644
index 0000000000..9963ce74d6
--- /dev/null
+++ b/polkadot/zombienet_tests/smoke/0003-deregister-register-validator.js
@@ -0,0 +1,46 @@
+const assert = require("assert");
+
+function nameCase(string) {
+	return string.charAt(0).toUpperCase() + string.slice(1);
+}
+
+async function run(nodeName, networkInfo, jsArgs) {
+    const {wsUri, userDefinedTypes} = networkInfo.nodesByName[nodeName];
+    const api = await zombie.connect(wsUri, userDefinedTypes);
+    const action = jsArgs[0] === "register" ? "registerValidators" : "deregisterValidators"
+    const validatorName = jsArgs[1]; // used as seed
+
+    await zombie.util.cryptoWaitReady();
+
+    // account to submit tx
+    const keyring = new zombie.Keyring({ type: "sr25519" });
+    const alice = keyring.addFromUri("//Alice");
+    const validatorStash = keyring.createFromUri(`//${nameCase(validatorName)}//stash`);
+
+    await new Promise(async (resolve, reject) => {
+        const unsub = await api.tx.sudo
+          .sudo(api.tx.validatorManager[action]([validatorStash.address]))
+          .signAndSend(alice, (result) => {
+            console.log(`Current status is ${result.status}`);
+            if (result.status.isInBlock) {
+              console.log(
+                `Transaction included at blockHash ${result.status.asInBlock}`
+              );
+            } else if (result.status.isFinalized) {
+              console.log(
+                `Transaction finalized at blockHash ${result.status.asFinalized}`
+              );
+              unsub();
+              return resolve();
+            } else if (result.isError) {
+              console.log(`Transaction Error`);
+              unsub();
+              return reject();
+            }
+          });
+    });
+
+    return 0;
+}
+
+module.exports = { run }